STROPHARIA SEMIGLOBATA 



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lower one, B, shows the hymenium in the exhausted condition at 

 the end of the spore-discharge period, i.e. at a stage correspond- 

 ing to that indicated in Fig. 118, C. In the upper drawing we can 

 discern that the hymenium is made up of past-generations basidia 

 (a), present-generation basidia (/;), coming-generation basidia (c), 

 future-generations basidia (d), small sterile paraphyses (e), and 

 cystidia (/). The cystidium is club-shaped and has a slender stalk 



FIG. 120. Stropharia semiglobata. Sketches of portions of an exhausted 

 hymenium after spore-discharge has ceased. A shows : the collapsed 

 basidia, b, each with four sterigmatic stumps ; a cystidium, c ; and 

 parts of two waste spores, w. The paraphyses are omitted. B shows 

 paraphyses, p, and one waste spore, w, only. The basidia are omitted 

 and no cystidia are present. C shows : paraphyses, p ; four cystidia, 

 c ; and two waste spores, w. Magnification, 440. 



which springs from one of the lowest cells of the subhymenium. 

 The present-generation basidium farthest to the left has just dis- 

 charged its first spore and is about to discharge its second. As 

 a preliminary to the second discharge a drop of water has been 

 excreted at the spore-hilum. The drop has developed within the 

 last five seconds and has almost attained its maximum size. In the 

 lower drawing it will be seen that the exhausted hymenium is made 

 up of collapsed past-generations basidia (a), swollen paraphyses (e), 

 and cystidia (/). The large cell, g, is an aborted basidium. It 

 contained thick protoplasm on its walls and a large central vacuole, 

 and it seems to have become swollen instead of producing spores. 

 That the basidia in any small area of the hymenium come to 



VOL. II. 



